深圳福田红树林系统藻类生态及系统净化功能研究

Study on Algal Ecology and Purification Capacity of Futian Mangrove Ecosystem, Shenzhen, PRC

红树林系统被认为具有次级污水处理功能。藻类是污水中的主要有机体。红树林系统如何能有效地包陷将会流入沿岸水体中的污水中的组分，是本项研究的重点，试验在深圳福田红树林系统中进行。扁圆囊裸藻（Ｔｒａｃｈ－ｅｌｏｍｏｍａｓｃｕｒｔａ）、裸藻（Ｅｕｇｌｅｎａｓｐｐ．）、线性棒条藻（Ｒｈａｂｄｏｄｅｒｍａｌｉｎｅａｒａ）是污水中典型的污染指示种类，藻类密度高达５×１０￣９个／Ｌ，生物量达１１．５４μｇ／Ｌ。污水排放进入红树林，并未对实验地（ＳｉｔｅＡ）藻类生物量产生显著影响；但对近海水体中藻类生物量的提高有一定促进作用；污水中的污染指示种类极少被冲出进入近岸水域。因此，红树林系统具有较大的潜力来包陷（Ｔｒａｐ）污水中的有机体，处理污水具有有效性。

Mangrove ecosystem can function as secondary wastewater treatment facility. Algaeare the dominant organisms in wastewater. Experiments were conducted in Futian mangroveswamp to find the favorable condition which mangrove ecosystem could trap the components ofwastewater entering the offshore systems. Trachelomomas curta, Euglena spp.and Rhabdodermalineara were the typical pollution indicator species in wastewater.The density of algae hadreached 5×10￣9 individual/L with the biomass of 11.54 μg/L.The wastewater discharged intomangrove system had no significant influence on algal biomass at Site A,but strengthened atsome degree the increase of algal biomass in the offshore systems.The pollution indicator speciesin wastewater had rarely been flushed out of the near shore water area. Mangrove ecosystem,therefore, possesses great potential to trap the organisms in wastewater for effective wastewatertreatment.